*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --danger: #ef4444;
  --success: #22c55e;
  --warning: #f59e0b;
  --muted: #6b7280;
  --border: #e5e7eb;
  --bg: #f9fafb;
  --card-bg: #ffffff;
  --text: #111827;
  --radius: 10px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ── Layout ── */
.center-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 16px;
}

.page-wide {
  max-width: 1000px;
  margin: 0 auto;
  padding: 32px 16px;
}

/* ── Card ── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}

.card + .card { margin-top: 16px; }

/* ── Nav ── */
nav {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
nav .brand { font-weight: 700; font-size: 1rem; display: flex; align-items: center; gap: 8px; }
nav .nav-links { display: flex; gap: 8px; align-items: center; }
nav a { text-decoration: none; color: var(--muted); font-size: .875rem; padding: 6px 10px; border-radius: 6px; }
nav a:hover, nav a.active { color: var(--primary); background: #eef2ff; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, opacity .15s;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { background: #dc2626; }
.btn-success { background: var(--success); color: #fff; }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-outline:hover:not(:disabled) { background: #eef2ff; }
.btn-sm { padding: 6px 12px; font-size: .8rem; }
.btn-google { background: #fff; color: #374151; border: 1px solid var(--border); }
.btn-google:hover { background: #f3f4f6; }

/* ── Forms ── */
.form-group { margin-bottom: 18px; }
label { display: block; font-size: .875rem; font-weight: 500; margin-bottom: 6px; }
input, select, textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: .9rem;
  color: var(--text);
  background: #fff;
  transition: border-color .15s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,.1);
}
textarea { resize: vertical; min-height: 80px; }

/* ── Slots grid ── */
.slots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
  margin: 12px 0;
}
.slot-btn {
  padding: 12px;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  text-align: left;
  font-size: .85rem;
  transition: border-color .15s, background .15s;
}
.slot-btn:hover { border-color: var(--primary); background: #eef2ff; }
.slot-btn.selected { border-color: var(--primary); background: #eef2ff; font-weight: 600; }
.slot-btn .slot-time { font-weight: 600; color: var(--text); }
.slot-btn .slot-date { color: var(--muted); font-size: .8rem; margin-top: 2px; }

/* ── Badges ── */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .03em;
}
.badge-approved { background: #dcfce7; color: #166534; }
.badge-pending  { background: #fef9c3; color: #854d0e; }
.badge-rejected { background: #fee2e2; color: #991b1b; }
.badge-suggested { background: #dbeafe; color: #1e40af; }

/* ── Table ── */
table { width: 100%; border-collapse: collapse; font-size: .875rem; }
th { text-align: left; padding: 10px 12px; background: var(--bg); color: var(--muted); font-weight: 600; border-bottom: 1px solid var(--border); }
td { padding: 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #fafafa; }

/* ── Tabs ── */
.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--border); margin-bottom: 24px; }
.tab-btn {
  padding: 10px 18px;
  border: none;
  background: none;
  cursor: pointer;
  font-size: .9rem;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  border-radius: 6px 6px 0 0;
  transition: color .15s;
}
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Misc ── */
.logo { font-size: 3rem; margin-bottom: 12px; }
h1 { font-size: 1.6rem; margin-bottom: 8px; }
h2 { font-size: 1.2rem; margin-bottom: 16px; }
.subtitle { color: var(--muted); margin-bottom: 24px; }
.error { color: var(--danger); font-size: .875rem; margin-top: 8px; }
.success-msg { color: #166534; background: #dcfce7; padding: 12px 16px; border-radius: 8px; margin-top: 16px; }
.hidden { display: none !important; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.flex { display: flex; align-items: center; gap: 8px; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.text-muted { color: var(--muted); font-size: .85rem; }
.spinner { display: inline-block; width: 18px; height: 18px; border: 2px solid #fff; border-top-color: transparent; border-radius: 50%; animation: spin .6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.empty-state { text-align: center; padding: 48px; color: var(--muted); }
.section-title { font-size: 1rem; font-weight: 600; margin-bottom: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }

/* ── Suggested slots ── */
.suggested-list { display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }
.suggested-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}